2 /* syncprov.c - syncrepl provider */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2004-2007 The OpenLDAP Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted only as authorized by the OpenLDAP
12 * A copy of this license is available in the file LICENSE in the
13 * top-level directory of the distribution or, alternatively, at
14 * <http://www.OpenLDAP.org/license.html>.
17 * This work was initially developed by Howard Chu for inclusion in
23 #ifdef SLAPD_OVER_SYNCPROV
25 #include <ac/string.h>
31 /* A modify request on a particular entry */
32 typedef struct modinst {
33 struct modinst *mi_next;
37 typedef struct modtarget {
38 struct modinst *mt_mods;
39 struct modinst *mt_tail;
41 ldap_pvt_thread_mutex_t mt_mutex;
44 /* A queued result of a persistent search */
45 typedef struct syncres {
46 struct syncres *s_next;
55 /* Record of a persistent search */
56 typedef struct syncops {
57 struct syncops *s_next;
58 struct berval s_base; /* ndn of search base */
59 ID s_eid; /* entryID of search base */
60 Operation *s_op; /* search op */
63 struct berval s_filterstr;
64 int s_flags; /* search status */
65 #define PS_IS_REFRESHING 0x01
66 #define PS_IS_DETACHED 0x02
67 #define PS_WROTE_BASE 0x04
68 #define PS_FIND_BASE 0x08
69 #define PS_FIX_FILTER 0x10
71 int s_inuse; /* reference count */
72 struct syncres *s_res;
73 struct syncres *s_restail;
74 struct re_s *s_qtask; /* task for playing psearch responses */
75 #define RUNQ_INTERVAL 36000 /* a long time */
76 ldap_pvt_thread_mutex_t s_mutex;
79 /* A received sync control */
80 typedef struct sync_control {
81 struct sync_cookie sr_state;
85 #if 0 /* moved back to slap.h */
86 #define o_sync o_ctrlflag[slap_cids.sc_LDAPsync]
88 /* o_sync_mode uses data bits of o_sync */
89 #define o_sync_mode o_ctrlflag[slap_cids.sc_LDAPsync]
91 #define SLAP_SYNC_NONE (LDAP_SYNC_NONE<<SLAP_CONTROL_SHIFT)
92 #define SLAP_SYNC_REFRESH (LDAP_SYNC_REFRESH_ONLY<<SLAP_CONTROL_SHIFT)
93 #define SLAP_SYNC_PERSIST (LDAP_SYNC_RESERVED<<SLAP_CONTROL_SHIFT)
94 #define SLAP_SYNC_REFRESH_AND_PERSIST (LDAP_SYNC_REFRESH_AND_PERSIST<<SLAP_CONTROL_SHIFT)
96 /* Record of which searches matched at premodify step */
97 typedef struct syncmatches {
98 struct syncmatches *sm_next;
102 /* Session log data */
103 typedef struct slog_entry {
104 struct slog_entry *se_next;
105 struct berval se_uuid;
106 struct berval se_csn;
111 typedef struct sessionlog {
112 struct berval sl_mincsn;
117 ldap_pvt_thread_mutex_t sl_mutex;
120 /* The main state for this overlay */
121 typedef struct syncprov_info_t {
123 BerVarray si_ctxcsn; /* ldapsync context */
126 int si_chkops; /* checkpointing info */
128 int si_numops; /* number of ops since last checkpoint */
129 int si_nopres; /* Skip present phase */
130 int si_usehint; /* use reload hint */
131 time_t si_chklast; /* time of last checkpoint */
132 Avlnode *si_mods; /* entries being modified */
134 ldap_pvt_thread_rdwr_t si_csn_rwlock;
135 ldap_pvt_thread_mutex_t si_ops_mutex;
136 ldap_pvt_thread_mutex_t si_mods_mutex;
139 typedef struct opcookie {
141 syncmatches *smatches;
142 struct berval sdn; /* DN of entry, for deletes */
144 struct berval suuid; /* UUID of entry */
145 struct berval sctxcsn;
146 int sreference; /* Is the entry a reference? */
149 typedef struct fbase_cookie {
150 struct berval *fdn; /* DN of a modified entry, for scope testing */
151 syncops *fss; /* persistent search we're testing against */
152 int fbase; /* if TRUE we found the search base and it's still valid */
153 int fscope; /* if TRUE then fdn is within the psearch scope */
156 static AttributeName csn_anlist[3];
157 static AttributeName uuid_anlist[2];
159 /* Build a LDAPsync intermediate state control */
165 int entry_sync_state,
169 struct berval *cookie )
174 BerElementBuffer berbuf;
175 BerElement *ber = (BerElement *)&berbuf;
177 struct berval entryuuid_bv = BER_BVNULL;
179 ber_init2( ber, 0, LBER_USE_DER );
180 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
182 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
184 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
185 AttributeDescription *desc = a->a_desc;
186 if ( desc == slap_schema.si_ad_entryUUID ) {
187 entryuuid_bv = a->a_nvals[0];
192 /* FIXME: what if entryuuid is NULL or empty ? */
194 if ( send_cookie && cookie ) {
195 ber_printf( ber, "{eOON}",
196 entry_sync_state, &entryuuid_bv, cookie );
198 ber_printf( ber, "{eON}",
199 entry_sync_state, &entryuuid_bv );
202 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_STATE;
203 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
204 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
209 Debug( LDAP_DEBUG_TRACE,
210 "slap_build_sync_ctrl: ber_flatten2 failed\n",
212 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
219 /* Build a LDAPsync final state control */
227 struct berval *cookie,
231 BerElementBuffer berbuf;
232 BerElement *ber = (BerElement *)&berbuf;
234 ber_init2( ber, NULL, LBER_USE_DER );
235 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
237 ctrls[num_ctrls] = op->o_tmpalloc( sizeof ( LDAPControl ), op->o_tmpmemctx );
239 ber_printf( ber, "{" );
240 if ( send_cookie && cookie ) {
241 ber_printf( ber, "O", cookie );
243 if ( refreshDeletes == LDAP_SYNC_REFRESH_DELETES ) {
244 ber_printf( ber, "b", refreshDeletes );
246 ber_printf( ber, "N}" );
248 ctrls[num_ctrls]->ldctl_oid = LDAP_CONTROL_SYNC_DONE;
249 ctrls[num_ctrls]->ldctl_iscritical = (op->o_sync == SLAP_CONTROL_CRITICAL);
250 ret = ber_flatten2( ber, &ctrls[num_ctrls]->ldctl_value, 1 );
255 Debug( LDAP_DEBUG_TRACE,
256 "syncprov_done_ctrl: ber_flatten2 failed\n",
258 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
270 struct berval *cookie,
275 BerElementBuffer berbuf;
276 BerElement *ber = (BerElement *)&berbuf;
277 struct berval rspdata;
281 ber_init2( ber, NULL, LBER_USE_DER );
282 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
286 case LDAP_TAG_SYNC_NEW_COOKIE:
287 ber_printf( ber, "tO", type, cookie );
289 case LDAP_TAG_SYNC_REFRESH_DELETE:
290 case LDAP_TAG_SYNC_REFRESH_PRESENT:
291 ber_printf( ber, "t{", type );
293 ber_printf( ber, "O", cookie );
295 if ( refreshDone == 0 ) {
296 ber_printf( ber, "b", refreshDone );
298 ber_printf( ber, "N}" );
300 case LDAP_TAG_SYNC_ID_SET:
301 ber_printf( ber, "t{", type );
303 ber_printf( ber, "O", cookie );
305 if ( refreshDeletes == 1 ) {
306 ber_printf( ber, "b", refreshDeletes );
308 ber_printf( ber, "[W]", syncUUIDs );
309 ber_printf( ber, "N}" );
312 Debug( LDAP_DEBUG_TRACE,
313 "syncprov_sendinfo: invalid syncinfo type (%d)\n",
319 ret = ber_flatten2( ber, &rspdata, 0 );
322 Debug( LDAP_DEBUG_TRACE,
323 "syncprov_sendinfo: ber_flatten2 failed\n",
325 send_ldap_error( op, rs, LDAP_OTHER, "internal error" );
329 rs->sr_rspoid = LDAP_SYNC_INFO;
330 rs->sr_rspdata = &rspdata;
331 send_ldap_intermediate( op, rs );
332 rs->sr_rspdata = NULL;
338 /* Find a modtarget in an AVL tree */
340 sp_avl_cmp( const void *c1, const void *c2 )
342 const modtarget *m1, *m2;
346 rc = m1->mt_op->o_req_ndn.bv_len - m2->mt_op->o_req_ndn.bv_len;
349 return ber_bvcmp( &m1->mt_op->o_req_ndn, &m2->mt_op->o_req_ndn );
352 /* syncprov_findbase:
353 * finds the true DN of the base of a search (with alias dereferencing) and
354 * checks to make sure the base entry doesn't get replaced with a different
355 * entry (e.g., swapping trees via ModDN, or retargeting an alias). If a
356 * change is detected, any persistent search on this base must be terminated /
358 * On the first call, we just save the DN and entryID. On subsequent calls
359 * we compare the DN and entryID with the saved values.
362 findbase_cb( Operation *op, SlapReply *rs )
364 slap_callback *sc = op->o_callback;
366 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
367 fbase_cookie *fc = sc->sc_private;
369 /* If no entryID, we're looking for the first time.
370 * Just store whatever we got.
372 if ( fc->fss->s_eid == NOID ) {
374 fc->fss->s_eid = rs->sr_entry->e_id;
375 ber_dupbv( &fc->fss->s_base, &rs->sr_entry->e_nname );
377 } else if ( rs->sr_entry->e_id == fc->fss->s_eid &&
378 dn_match( &rs->sr_entry->e_nname, &fc->fss->s_base )) {
380 /* OK, the DN is the same and the entryID is the same. */
384 if ( rs->sr_err != LDAP_SUCCESS ) {
385 Debug( LDAP_DEBUG_ANY, "findbase failed! %d\n", rs->sr_err,0,0 );
390 static Filter generic_filter = { LDAP_FILTER_PRESENT, { 0 }, NULL };
391 static struct berval generic_filterstr = BER_BVC("(objectclass=*)");
394 syncprov_findbase( Operation *op, fbase_cookie *fc )
396 opcookie *opc = op->o_callback->sc_private;
397 slap_overinst *on = opc->son;
399 /* Use basic parameters from syncrepl search, but use
400 * current op's threadctx / tmpmemctx
402 ldap_pvt_thread_mutex_lock( &fc->fss->s_mutex );
403 if ( fc->fss->s_flags & PS_FIND_BASE ) {
404 slap_callback cb = {0};
406 SlapReply frs = { REP_RESULT };
410 fc->fss->s_flags ^= PS_FIND_BASE;
411 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
413 fop = *fc->fss->s_op;
415 fop.o_hdr = op->o_hdr;
417 fop.o_time = op->o_time;
418 fop.o_tincr = op->o_tincr;
419 bi = op->o_bd->bd_info;
421 cb.sc_response = findbase_cb;
424 fop.o_sync_mode = 0; /* turn off sync mode */
425 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
426 fop.o_callback = &cb;
427 fop.o_tag = LDAP_REQ_SEARCH;
428 fop.ors_scope = LDAP_SCOPE_BASE;
429 fop.ors_limit = NULL;
431 fop.ors_tlimit = SLAP_NO_LIMIT;
432 fop.ors_attrs = slap_anlist_no_attrs;
433 fop.ors_attrsonly = 1;
434 fop.ors_filter = &generic_filter;
435 fop.ors_filterstr = generic_filterstr;
437 rc = overlay_op_walk( &fop, &frs, op_search, on->on_info, on );
438 op->o_bd->bd_info = bi;
440 ldap_pvt_thread_mutex_unlock( &fc->fss->s_mutex );
444 /* After the first call, see if the fdn resides in the scope */
445 if ( fc->fbase == 1 ) {
446 switch ( fc->fss->s_op->ors_scope ) {
447 case LDAP_SCOPE_BASE:
448 fc->fscope = dn_match( fc->fdn, &fc->fss->s_base );
450 case LDAP_SCOPE_ONELEVEL: {
452 dnParent( fc->fdn, &pdn );
453 fc->fscope = dn_match( &pdn, &fc->fss->s_base );
455 case LDAP_SCOPE_SUBTREE:
456 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base );
458 case LDAP_SCOPE_SUBORDINATE:
459 fc->fscope = dnIsSuffix( fc->fdn, &fc->fss->s_base ) &&
460 !dn_match( fc->fdn, &fc->fss->s_base );
468 /* If entryID has changed, then the base of this search has
469 * changed. Invalidate the psearch.
471 return LDAP_NO_SUCH_OBJECT;
475 * This function has three different purposes, but they all use a search
476 * that filters on entryCSN so they're combined here.
477 * 1: at startup time, after a contextCSN has been read from the database,
478 * we search for all entries with CSN >= contextCSN in case the contextCSN
479 * was not checkpointed at the previous shutdown.
481 * 2: when the current contextCSN is known and we have a sync cookie, we search
482 * for one entry with CSN = the cookie CSN. If not found, try <= cookie CSN.
483 * If an entry is found, the cookie CSN is valid, otherwise it is stale.
485 * 3: during a refresh phase, we search for all entries with CSN <= the cookie
486 * CSN, and generate Present records for them. We always collect this result
487 * in SyncID sets, even if there's only one match.
489 typedef enum find_csn_t {
496 findmax_cb( Operation *op, SlapReply *rs )
498 if ( rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS ) {
499 struct berval *maxcsn = op->o_callback->sc_private;
500 Attribute *a = attr_find( rs->sr_entry->e_attrs,
501 slap_schema.si_ad_entryCSN );
503 if ( a && ber_bvcmp( &a->a_vals[0], maxcsn ) > 0 ) {
504 maxcsn->bv_len = a->a_vals[0].bv_len;
505 strcpy( maxcsn->bv_val, a->a_vals[0].bv_val );
512 findcsn_cb( Operation *op, SlapReply *rs )
514 slap_callback *sc = op->o_callback;
516 /* We just want to know that at least one exists, so it's OK if
517 * we exceed the unchecked limit.
519 if ( rs->sr_err == LDAP_ADMINLIMIT_EXCEEDED ||
520 (rs->sr_type == REP_SEARCH && rs->sr_err == LDAP_SUCCESS )) {
521 sc->sc_private = (void *)1;
526 /* Build a list of entryUUIDs for sending in a SyncID set */
530 typedef struct fpres_cookie {
537 findpres_cb( Operation *op, SlapReply *rs )
539 slap_callback *sc = op->o_callback;
540 fpres_cookie *pc = sc->sc_private;
542 int ret = SLAP_CB_CONTINUE;
544 switch ( rs->sr_type ) {
546 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryUUID );
548 pc->uuids[pc->num].bv_val = pc->last;
549 AC_MEMCPY( pc->uuids[pc->num].bv_val, a->a_nvals[0].bv_val,
550 pc->uuids[pc->num].bv_len );
552 pc->last = pc->uuids[pc->num].bv_val;
553 pc->uuids[pc->num].bv_val = NULL;
556 if ( pc->num != SLAP_SYNCUUID_SET_SIZE )
562 ret = syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, NULL,
564 pc->uuids[pc->num].bv_val = pc->last;
566 pc->last = pc->uuids[0].bv_val;
576 syncprov_findcsn( Operation *op, find_csn_t mode )
578 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
579 syncprov_info_t *si = on->on_bi.bi_private;
581 slap_callback cb = {0};
583 SlapReply frs = { REP_RESULT };
584 char buf[LDAP_LUTIL_CSNSTR_BUFSIZE + STRLENOF("(entryCSN<=)")];
585 char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
586 struct berval maxcsn;
588 #ifdef LDAP_COMP_MATCH
589 AttributeAssertion eq = { NULL, BER_BVNULL, NULL };
591 AttributeAssertion eq = { NULL, BER_BVNULL };
593 fpres_cookie pcookie;
594 sync_control *srs = NULL;
595 struct slap_limits_set fc_limits;
596 int i, rc = LDAP_SUCCESS, findcsn_retry = 1;
599 if ( mode != FIND_MAXCSN ) {
600 srs = op->o_controls[slap_cids.sc_LDAPsync];
604 fop.o_sync_mode &= SLAP_CONTROL_MASK; /* turn off sync_mode */
605 /* We want pure entries, not referrals */
606 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
609 cf.f_av_desc = slap_schema.si_ad_entryCSN;
610 BER_BVZERO( &cf.f_av_value );
613 fop.o_callback = &cb;
614 fop.ors_limit = NULL;
615 fop.ors_tlimit = SLAP_NO_LIMIT;
616 fop.ors_filter = &cf;
617 fop.ors_filterstr.bv_val = buf;
622 cf.f_choice = LDAP_FILTER_GE;
623 cf.f_av_value = si->si_ctxcsn[0];
624 /* If there are multiple CSNs, use the largest */
625 for ( i=1; i<si->si_numcsns; i++) {
626 if ( ber_bvcmp( &cf.f_av_value, &si->si_ctxcsn[i] ) < 0 ) {
627 cf.f_av_value = si->si_ctxcsn[i];
631 fop.ors_filterstr.bv_len = sprintf( buf, "(entryCSN>=%s)",
632 cf.f_av_value.bv_val );
633 fop.ors_attrsonly = 0;
634 fop.ors_attrs = csn_anlist;
635 fop.ors_slimit = SLAP_NO_LIMIT;
636 cb.sc_private = &maxcsn;
637 cb.sc_response = findmax_cb;
638 strcpy( cbuf, cf.f_av_value.bv_val );
639 maxcsn.bv_val = cbuf;
640 maxcsn.bv_len = cf.f_av_value.bv_len;
643 if ( BER_BVISEMPTY( &cf.f_av_value )) {
644 cf.f_av_value = srs->sr_state.ctxcsn[0];
645 /* If there are multiple CSNs, use the smallest */
646 for ( i=1; i<srs->sr_state.numcsns; i++ ) {
647 if ( ber_bvcmp( &cf.f_av_value, &srs->sr_state.ctxcsn[i] )
649 cf.f_av_value = srs->sr_state.ctxcsn[i];
653 /* Look for exact match the first time */
654 if ( findcsn_retry ) {
655 cf.f_choice = LDAP_FILTER_EQUALITY;
656 fop.ors_filterstr.bv_len = sprintf( buf, "(entryCSN=%s)",
657 cf.f_av_value.bv_val );
658 /* On retry, look for <= */
660 cf.f_choice = LDAP_FILTER_LE;
661 fop.ors_limit = &fc_limits;
662 memset( &fc_limits, 0, sizeof( fc_limits ));
663 fc_limits.lms_s_unchecked = 1;
664 fop.ors_filterstr.bv_len = sprintf( buf, "(entryCSN<=%s)",
665 cf.f_av_value.bv_val );
667 fop.ors_attrsonly = 1;
668 fop.ors_attrs = slap_anlist_no_attrs;
670 cb.sc_private = NULL;
671 cb.sc_response = findcsn_cb;
674 fop.ors_filter = op->ors_filter;
675 fop.ors_filterstr = op->ors_filterstr;
676 fop.ors_attrsonly = 0;
677 fop.ors_attrs = uuid_anlist;
678 fop.ors_slimit = SLAP_NO_LIMIT;
679 cb.sc_private = &pcookie;
680 cb.sc_response = findpres_cb;
683 /* preallocate storage for a full set */
684 pcookie.uuids = op->o_tmpalloc( (SLAP_SYNCUUID_SET_SIZE+1) *
685 sizeof(struct berval) + SLAP_SYNCUUID_SET_SIZE * UUID_LEN,
687 pcookie.last = (char *)(pcookie.uuids + SLAP_SYNCUUID_SET_SIZE+1);
688 pcookie.uuids[0].bv_val = pcookie.last;
689 pcookie.uuids[0].bv_len = UUID_LEN;
690 for (i=1; i<SLAP_SYNCUUID_SET_SIZE; i++) {
691 pcookie.uuids[i].bv_val = pcookie.uuids[i-1].bv_val + UUID_LEN;
692 pcookie.uuids[i].bv_len = UUID_LEN;
697 fop.o_bd->bd_info = on->on_info->oi_orig;
698 fop.o_bd->be_search( &fop, &frs );
699 fop.o_bd->bd_info = (BackendInfo *)on;
703 if ( ber_bvcmp( &si->si_ctxcsn[maxid], &maxcsn )) {
704 ber_bvreplace( &si->si_ctxcsn[maxid], &maxcsn );
705 si->si_numops++; /* ensure a checkpoint */
709 /* If matching CSN was not found, invalidate the context. */
710 if ( !cb.sc_private ) {
711 /* If we didn't find an exact match, then try for <= */
712 if ( findcsn_retry ) {
716 rc = LDAP_NO_SUCH_OBJECT;
720 op->o_tmpfree( pcookie.uuids, op->o_tmpmemctx );
728 syncprov_free_syncop( syncops *so )
730 syncres *sr, *srnext;
731 GroupAssertion *ga, *gnext;
733 ldap_pvt_thread_mutex_lock( &so->s_mutex );
734 if ( --so->s_inuse > 0 ) {
735 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
738 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
739 if ( so->s_flags & PS_IS_DETACHED ) {
740 filter_free( so->s_op->ors_filter );
741 for ( ga = so->s_op->o_groups; ga; ga=gnext ) {
747 ch_free( so->s_base.bv_val );
748 for ( sr=so->s_res; sr; sr=srnext ) {
752 ldap_pvt_thread_mutex_destroy( &so->s_mutex );
756 /* Send a persistent search response */
758 syncprov_sendresp( Operation *op, opcookie *opc, syncops *so,
759 Entry **e, int mode )
761 slap_overinst *on = opc->son;
763 SlapReply rs = { REP_SEARCH };
764 LDAPControl *ctrls[2];
765 struct berval cookie, csns[2];
767 Attribute a_uuid = {0};
769 if ( so->s_op->o_abandon )
770 return SLAPD_ABANDON;
773 csns[0] = opc->sctxcsn;
774 BER_BVZERO( &csns[1] );
775 slap_compose_sync_cookie( op, &cookie, csns, so->s_rid, so->s_sid );
777 e_uuid.e_attrs = &a_uuid;
778 a_uuid.a_desc = slap_schema.si_ad_entryUUID;
779 a_uuid.a_nvals = &opc->suuid;
780 rs.sr_err = syncprov_state_ctrl( op, &rs, &e_uuid,
781 mode, ctrls, 0, 1, &cookie );
782 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
785 op->o_bd->bd_info = (BackendInfo *)on->on_info;
789 if ( rs.sr_entry->e_private )
790 rs.sr_flags = REP_ENTRY_MUSTRELEASE;
791 if ( opc->sreference ) {
792 rs.sr_ref = get_entry_referrals( op, rs.sr_entry );
793 rs.sr_err = send_search_reference( op, &rs );
794 ber_bvarray_free( rs.sr_ref );
800 case LDAP_SYNC_MODIFY:
802 if ( rs.sr_entry->e_private )
803 rs.sr_flags = REP_ENTRY_MUSTRELEASE;
804 rs.sr_attrs = op->ors_attrs;
805 rs.sr_err = send_search_entry( op, &rs );
809 case LDAP_SYNC_DELETE:
810 e_uuid.e_attrs = NULL;
811 e_uuid.e_name = opc->sdn;
812 e_uuid.e_nname = opc->sndn;
813 rs.sr_entry = &e_uuid;
814 if ( opc->sreference ) {
815 struct berval bv = BER_BVNULL;
817 rs.sr_err = send_search_reference( op, &rs );
819 rs.sr_err = send_search_entry( op, &rs );
825 /* In case someone else freed it already? */
827 op->o_tmpfree( rs.sr_ctrls[0], op->o_tmpmemctx );
834 /* Play back queued responses */
836 syncprov_qplay( Operation *op, slap_overinst *on, syncops *so )
846 ldap_pvt_thread_mutex_lock( &so->s_mutex );
849 so->s_res = sr->s_next;
851 so->s_restail = NULL;
852 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
854 if ( !sr || so->s_op->o_abandon )
858 opc.sndn = sr->s_ndn;
859 opc.suuid = sr->s_uuid;
860 opc.sctxcsn = sr->s_csn;
861 opc.sreference = sr->s_isreference;
864 if ( sr->s_mode != LDAP_SYNC_DELETE ) {
865 rc = overlay_entry_get_ov( op, &opc.sndn, NULL, NULL, 0, &e, on );
867 Debug( LDAP_DEBUG_SYNC, "syncprov_qplay: failed to get %s, "
868 "error (%d), ignoring...\n", opc.sndn.bv_val, rc, 0 );
874 rc = syncprov_sendresp( op, &opc, so, &e, sr->s_mode );
877 overlay_entry_release_ov( op, e, 0, on );
888 /* runqueue task for playing back queued responses */
890 syncprov_qtask( void *ctx, void *arg )
892 struct re_s *rtask = arg;
893 syncops *so = rtask->arg;
894 slap_overinst *on = so->s_op->o_private;
895 OperationBuffer opbuf;
902 op->o_hdr = &opbuf.ob_hdr;
903 op->o_controls = opbuf.ob_controls;
904 memset( op->o_controls, 0, sizeof(opbuf.ob_controls) );
906 *op->o_hdr = *so->s_op->o_hdr;
908 op->o_tmpmemctx = slap_sl_mem_create(SLAP_SLAB_SIZE, SLAP_SLAB_STACK, ctx, 1);
909 op->o_tmpmfuncs = &slap_sl_mfuncs;
910 op->o_threadctx = ctx;
912 /* syncprov_qplay expects a fake db */
913 be = *so->s_op->o_bd;
914 be.be_flags |= SLAP_DBFLAG_OVERLAY;
916 op->o_private = NULL;
917 op->o_callback = NULL;
919 rc = syncprov_qplay( op, on, so );
921 /* decrement use count... */
922 syncprov_free_syncop( so );
924 /* wait until we get explicitly scheduled again */
925 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
926 ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
928 ldap_pvt_runqueue_resched( &slapd_rq, rtask, 1 );
930 /* bail out on any error */
931 ldap_pvt_runqueue_remove( &slapd_rq, rtask );
933 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
935 #if 0 /* FIXME: connection_close isn't exported from slapd.
939 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
940 if ( connection_state_closing( op->o_conn )) {
941 connection_close( op->o_conn );
943 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
949 /* Start the task to play back queued psearch responses */
951 syncprov_qstart( syncops *so )
954 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
955 if ( !so->s_qtask ) {
956 so->s_qtask = ldap_pvt_runqueue_insert( &slapd_rq, RUNQ_INTERVAL,
957 syncprov_qtask, so, "syncprov_qtask",
958 so->s_op->o_conn->c_peer_name.bv_val );
962 if (!ldap_pvt_runqueue_isrunning( &slapd_rq, so->s_qtask ) &&
963 !so->s_qtask->next_sched.tv_sec ) {
964 so->s_qtask->interval.tv_sec = 0;
965 ldap_pvt_runqueue_resched( &slapd_rq, so->s_qtask, 0 );
966 so->s_qtask->interval.tv_sec = RUNQ_INTERVAL;
971 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
973 slap_wake_listener();
976 /* Queue a persistent search response */
978 syncprov_qresp( opcookie *opc, syncops *so, int mode )
983 /* Don't send changes back to their originator */
984 sid = slap_parse_csn_sid( &opc->sctxcsn );
985 if ( sid >= 0 && sid == so->s_sid )
988 sr = ch_malloc(sizeof(syncres) + opc->suuid.bv_len + 1 +
989 opc->sdn.bv_len + 1 + opc->sndn.bv_len + 1 + opc->sctxcsn.bv_len + 1 );
991 sr->s_dn.bv_val = (char *)(sr + 1);
992 sr->s_dn.bv_len = opc->sdn.bv_len;
994 sr->s_isreference = opc->sreference;
995 sr->s_ndn.bv_val = lutil_strcopy( sr->s_dn.bv_val,
996 opc->sdn.bv_val ) + 1;
997 sr->s_ndn.bv_len = opc->sndn.bv_len;
998 sr->s_uuid.bv_val = lutil_strcopy( sr->s_ndn.bv_val,
999 opc->sndn.bv_val ) + 1;
1000 sr->s_uuid.bv_len = opc->suuid.bv_len;
1001 AC_MEMCPY( sr->s_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1002 sr->s_csn.bv_val = sr->s_uuid.bv_val + sr->s_uuid.bv_len + 1;
1003 sr->s_csn.bv_len = opc->sctxcsn.bv_len;
1004 strcpy( sr->s_csn.bv_val, opc->sctxcsn.bv_val );
1006 ldap_pvt_thread_mutex_lock( &so->s_mutex );
1010 so->s_restail->s_next = sr;
1014 /* If the base of the psearch was modified, check it next time round */
1015 if ( so->s_flags & PS_WROTE_BASE ) {
1016 so->s_flags ^= PS_WROTE_BASE;
1017 so->s_flags |= PS_FIND_BASE;
1019 if ( so->s_flags & PS_IS_DETACHED ) {
1020 syncprov_qstart( so );
1022 ldap_pvt_thread_mutex_unlock( &so->s_mutex );
1023 return LDAP_SUCCESS;
1027 syncprov_drop_psearch( syncops *so, int lock )
1029 if ( so->s_flags & PS_IS_DETACHED ) {
1031 ldap_pvt_thread_mutex_lock( &so->s_op->o_conn->c_mutex );
1032 so->s_op->o_conn->c_n_ops_executing--;
1033 so->s_op->o_conn->c_n_ops_completed++;
1034 LDAP_STAILQ_REMOVE( &so->s_op->o_conn->c_ops, so->s_op, Operation,
1037 ldap_pvt_thread_mutex_unlock( &so->s_op->o_conn->c_mutex );
1039 syncprov_free_syncop( so );
1045 syncprov_ab_cleanup( Operation *op, SlapReply *rs )
1047 slap_callback *sc = op->o_callback;
1048 op->o_callback = sc->sc_next;
1049 syncprov_drop_psearch( op->o_callback->sc_private, 0 );
1050 op->o_tmpfree( sc, op->o_tmpmemctx );
1055 syncprov_op_abandon( Operation *op, SlapReply *rs )
1057 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1058 syncprov_info_t *si = on->on_bi.bi_private;
1059 syncops *so, *soprev;
1061 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1062 for ( so=si->si_ops, soprev = (syncops *)&si->si_ops; so;
1063 soprev=so, so=so->s_next ) {
1064 if ( so->s_op->o_connid == op->o_connid &&
1065 so->s_op->o_msgid == op->orn_msgid ) {
1066 so->s_op->o_abandon = 1;
1067 soprev->s_next = so->s_next;
1071 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1073 /* Is this really a Cancel exop? */
1074 if ( op->o_tag != LDAP_REQ_ABANDON ) {
1075 so->s_op->o_cancel = SLAP_CANCEL_ACK;
1076 rs->sr_err = LDAP_CANCELLED;
1077 send_ldap_result( so->s_op, rs );
1078 if ( so->s_flags & PS_IS_DETACHED ) {
1080 cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
1081 cb->sc_cleanup = syncprov_ab_cleanup;
1082 cb->sc_next = op->o_callback;
1083 cb->sc_private = so;
1084 return SLAP_CB_CONTINUE;
1087 syncprov_drop_psearch( so, 0 );
1089 return SLAP_CB_CONTINUE;
1092 /* Find which persistent searches are affected by this operation */
1094 syncprov_matchops( Operation *op, opcookie *opc, int saveit )
1096 slap_overinst *on = opc->son;
1097 syncprov_info_t *si = on->on_bi.bi_private;
1100 syncops *ss, *sprev, *snext;
1104 struct berval newdn;
1106 BackendDB *b0 = op->o_bd, db;
1108 fc.fdn = &op->o_req_ndn;
1109 /* compute new DN */
1110 if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1112 if ( op->orr_nnewSup ) pdn = *op->orr_nnewSup;
1113 else dnParent( fc.fdn, &pdn );
1114 build_new_dn( &newdn, &pdn, &op->orr_nnewrdn, op->o_tmpmemctx );
1118 if ( op->o_tag != LDAP_REQ_ADD ) {
1119 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1123 rc = overlay_entry_get_ov( op, fc.fdn, NULL, NULL, 0, &e, on );
1124 /* If we're sending responses now, make a copy and unlock the DB */
1125 if ( e && !saveit ) {
1126 Entry *e2 = entry_dup( e );
1127 overlay_entry_release_ov( op, e, 0, on );
1138 if ( saveit || op->o_tag == LDAP_REQ_ADD ) {
1139 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1140 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1141 opc->sreference = is_entry_referral( e );
1142 a = attr_find( e->e_attrs, slap_schema.si_ad_entryUUID );
1144 ber_dupbv_x( &opc->suuid, &a->a_nvals[0], op->o_tmpmemctx );
1145 } else if ( op->o_tag == LDAP_REQ_MODRDN && !saveit ) {
1146 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1147 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1148 ber_dupbv_x( &opc->sdn, &e->e_name, op->o_tmpmemctx );
1149 ber_dupbv_x( &opc->sndn, &e->e_nname, op->o_tmpmemctx );
1152 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
1153 for (ss = si->si_ops, sprev = (syncops *)&si->si_ops; ss;
1154 sprev = ss, ss=snext)
1165 /* If the base of the search is missing, signal a refresh */
1166 rc = syncprov_findbase( op, &fc );
1167 if ( rc != LDAP_SUCCESS ) {
1168 SlapReply rs = {REP_RESULT};
1169 send_ldap_error( ss->s_op, &rs, LDAP_SYNC_REFRESH_REQUIRED,
1170 "search base has changed" );
1171 sprev->s_next = snext;
1172 syncprov_drop_psearch( ss, 1 );
1178 /* If we're sending results now, look for this op in old matches */
1182 /* Did we modify the search base? */
1183 if ( dn_match( &op->o_req_ndn, &ss->s_base )) {
1184 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1185 ss->s_flags |= PS_WROTE_BASE;
1186 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1189 for ( sm=opc->smatches, old=(syncmatches *)&opc->smatches; sm;
1190 old=sm, sm=sm->sm_next ) {
1191 if ( sm->sm_op == ss ) {
1193 old->sm_next = sm->sm_next;
1194 op->o_tmpfree( sm, op->o_tmpmemctx );
1200 /* check if current o_req_dn is in scope and matches filter */
1201 if ( fc.fscope && test_filter( op, e, ss->s_op->ors_filter ) ==
1202 LDAP_COMPARE_TRUE ) {
1204 sm = op->o_tmpalloc( sizeof(syncmatches), op->o_tmpmemctx );
1205 sm->sm_next = opc->smatches;
1207 ldap_pvt_thread_mutex_lock( &ss->s_mutex );
1209 ldap_pvt_thread_mutex_unlock( &ss->s_mutex );
1212 /* if found send UPDATE else send ADD */
1213 syncprov_qresp( opc, ss,
1214 found ? LDAP_SYNC_MODIFY : LDAP_SYNC_ADD );
1216 } else if ( !saveit && found ) {
1218 syncprov_qresp( opc, ss, LDAP_SYNC_DELETE );
1221 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
1223 if ( op->o_tag != LDAP_REQ_ADD && e ) {
1224 if ( !SLAP_ISOVERLAY( op->o_bd )) {
1227 overlay_entry_release_ov( op, e, 0, on );
1231 op->o_tmpfree( fc.fdn->bv_val, op->o_tmpmemctx );
1237 syncprov_op_cleanup( Operation *op, SlapReply *rs )
1239 slap_callback *cb = op->o_callback;
1240 opcookie *opc = cb->sc_private;
1241 slap_overinst *on = opc->son;
1242 syncprov_info_t *si = on->on_bi.bi_private;
1243 syncmatches *sm, *snext;
1244 modtarget *mt, mtdummy;
1246 for (sm = opc->smatches; sm; sm=snext) {
1247 snext = sm->sm_next;
1248 syncprov_free_syncop( sm->sm_op );
1249 op->o_tmpfree( sm, op->o_tmpmemctx );
1252 /* Remove op from lock table */
1254 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
1255 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
1257 modinst *mi = mt->mt_mods;
1259 /* If there are more, promote the next one */
1260 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1261 if ( mi->mi_next ) {
1262 mt->mt_mods = mi->mi_next;
1263 mt->mt_op = mt->mt_mods->mi_op;
1264 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1266 avl_delete( &si->si_mods, mt, sp_avl_cmp );
1267 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1268 ldap_pvt_thread_mutex_destroy( &mt->mt_mutex );
1272 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1273 if ( !BER_BVISNULL( &opc->suuid ))
1274 op->o_tmpfree( opc->suuid.bv_val, op->o_tmpmemctx );
1275 if ( !BER_BVISNULL( &opc->sndn ))
1276 op->o_tmpfree( opc->sndn.bv_val, op->o_tmpmemctx );
1277 if ( !BER_BVISNULL( &opc->sdn ))
1278 op->o_tmpfree( opc->sdn.bv_val, op->o_tmpmemctx );
1279 op->o_callback = cb->sc_next;
1280 op->o_tmpfree(cb, op->o_tmpmemctx);
1286 syncprov_checkpoint( Operation *op, SlapReply *rs, slap_overinst *on )
1288 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
1291 SlapReply rsm = { 0 };
1292 slap_callback cb = {0};
1294 mod.sml_values = si->si_ctxcsn;
1295 mod.sml_nvalues = NULL;
1296 mod.sml_desc = slap_schema.si_ad_contextCSN;
1297 mod.sml_op = LDAP_MOD_REPLACE;
1299 mod.sml_next = NULL;
1301 cb.sc_response = slap_null_cb;
1303 opm.o_tag = LDAP_REQ_MODIFY;
1304 opm.o_callback = &cb;
1305 opm.orm_modlist = &mod;
1306 opm.orm_no_opattrs = 1;
1307 opm.o_req_dn = op->o_bd->be_suffix[0];
1308 opm.o_req_ndn = op->o_bd->be_nsuffix[0];
1309 opm.o_bd->bd_info = on->on_info->oi_orig;
1310 opm.o_managedsait = SLAP_CONTROL_NONCRITICAL;
1311 opm.o_no_schema_check = 1;
1312 opm.o_bd->be_modify( &opm, &rsm );
1313 if ( mod.sml_next != NULL ) {
1314 slap_mods_free( mod.sml_next, 1 );
1316 opm.orm_no_opattrs = 0;
1320 syncprov_add_slog( Operation *op )
1322 opcookie *opc = op->o_callback->sc_private;
1323 slap_overinst *on = opc->son;
1324 syncprov_info_t *si = on->on_bi.bi_private;
1330 /* Allocate a record. UUIDs are not NUL-terminated. */
1331 se = ch_malloc( sizeof( slog_entry ) + opc->suuid.bv_len +
1332 op->o_csn.bv_len + 1 );
1334 se->se_tag = op->o_tag;
1336 se->se_uuid.bv_val = (char *)(&se[1]);
1337 AC_MEMCPY( se->se_uuid.bv_val, opc->suuid.bv_val, opc->suuid.bv_len );
1338 se->se_uuid.bv_len = opc->suuid.bv_len;
1340 se->se_csn.bv_val = se->se_uuid.bv_val + opc->suuid.bv_len;
1341 AC_MEMCPY( se->se_csn.bv_val, op->o_csn.bv_val, op->o_csn.bv_len );
1342 se->se_csn.bv_val[op->o_csn.bv_len] = '\0';
1343 se->se_csn.bv_len = op->o_csn.bv_len;
1344 se->se_sid = slap_parse_csn_sid( &se->se_csn );
1346 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
1347 if ( sl->sl_head ) {
1348 sl->sl_tail->se_next = se;
1354 while ( sl->sl_num > sl->sl_size ) {
1356 sl->sl_head = se->se_next;
1357 strcpy( sl->sl_mincsn.bv_val, se->se_csn.bv_val );
1358 sl->sl_mincsn.bv_len = se->se_csn.bv_len;
1362 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1366 /* Just set a flag if we found the matching entry */
1368 playlog_cb( Operation *op, SlapReply *rs )
1370 if ( rs->sr_type == REP_SEARCH ) {
1371 op->o_callback->sc_private = (void *)1;
1376 /* enter with sl->sl_mutex locked, release before returning */
1378 syncprov_playlog( Operation *op, SlapReply *rs, sessionlog *sl,
1379 sync_control *srs, BerVarray ctxcsn, int numcsns, int *sids )
1381 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1383 int i, j, ndel, num, nmods, mmods;
1384 char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
1386 struct berval delcsn[2];
1388 if ( !sl->sl_num ) {
1389 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1397 uuids = op->o_tmpalloc( (num+1) * sizeof( struct berval ) +
1398 num * UUID_LEN, op->o_tmpmemctx );
1399 uuids[0].bv_val = (char *)(uuids + num + 1);
1401 delcsn[0].bv_len = 0;
1402 delcsn[0].bv_val = cbuf;
1403 BER_BVZERO(&delcsn[1]);
1405 /* Make a copy of the relevant UUIDs. Put the Deletes up front
1406 * and everything else at the end. Do this first so we can
1407 * unlock the list mutex.
1409 Debug( LDAP_DEBUG_SYNC, "srs csn %s\n",
1410 srs->sr_state.ctxcsn[0].bv_val, 0, 0 );
1411 for ( se=sl->sl_head; se; se=se->se_next ) {
1413 Debug( LDAP_DEBUG_SYNC, "log csn %s\n", se->se_csn.bv_val, 0, 0 );
1415 for ( k=0; k<srs->sr_state.numcsns; k++ ) {
1416 if ( se->se_sid == srs->sr_state.sids[k] ) {
1417 ndel = ber_bvcmp( &se->se_csn, &srs->sr_state.ctxcsn[k] );
1422 Debug( LDAP_DEBUG_SYNC, "cmp %d, too old\n", ndel, 0, 0 );
1426 for ( k=0; k<numcsns; k++ ) {
1427 if ( se->se_sid == sids[k] ) {
1428 ndel = ber_bvcmp( &se->se_csn, &ctxcsn[k] );
1433 Debug( LDAP_DEBUG_SYNC, "cmp %d, too new\n", ndel, 0, 0 );
1436 if ( se->se_tag == LDAP_REQ_DELETE ) {
1439 AC_MEMCPY( cbuf, se->se_csn.bv_val, se->se_csn.bv_len );
1440 delcsn[0].bv_len = se->se_csn.bv_len;
1441 delcsn[0].bv_val[delcsn[0].bv_len] = '\0';
1446 uuids[j].bv_val = uuids[0].bv_val + (j * UUID_LEN);
1447 AC_MEMCPY(uuids[j].bv_val, se->se_uuid.bv_val, UUID_LEN);
1448 uuids[j].bv_len = UUID_LEN;
1450 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
1454 /* Zero out unused slots */
1455 for ( i=ndel; i < num - nmods; i++ )
1456 uuids[i].bv_len = 0;
1458 /* Mods must be validated to see if they belong in this delete set.
1462 /* Strip any duplicates */
1463 for ( i=0; i<nmods; i++ ) {
1464 for ( j=0; j<ndel; j++ ) {
1465 if ( bvmatch( &uuids[j], &uuids[num - 1 - i] )) {
1466 uuids[num - 1 - i].bv_len = 0;
1471 if ( uuids[num - 1 - i].bv_len == 0 ) continue;
1472 for ( j=0; j<i; j++ ) {
1473 if ( bvmatch( &uuids[num - 1 - j], &uuids[num - 1 - i] )) {
1474 uuids[num - 1 - i].bv_len = 0;
1483 SlapReply frs = { REP_RESULT };
1486 #ifdef LDAP_COMP_MATCH
1487 AttributeAssertion eq = { NULL, BER_BVNULL, NULL };
1489 AttributeAssertion eq;
1491 slap_callback cb = {0};
1495 fop.o_sync_mode = 0;
1496 fop.o_callback = &cb;
1497 fop.ors_limit = NULL;
1498 fop.ors_tlimit = SLAP_NO_LIMIT;
1499 fop.ors_attrs = slap_anlist_all_attributes;
1500 fop.ors_attrsonly = 0;
1501 fop.o_managedsait = SLAP_CONTROL_CRITICAL;
1503 af.f_choice = LDAP_FILTER_AND;
1506 mf.f_choice = LDAP_FILTER_EQUALITY;
1508 mf.f_av_desc = slap_schema.si_ad_entryUUID;
1509 mf.f_next = fop.ors_filter;
1511 fop.ors_filter = ⁡
1513 cb.sc_response = playlog_cb;
1514 fop.o_bd->bd_info = on->on_info->oi_orig;
1516 for ( i=ndel; i<num; i++ ) {
1517 if ( uuids[i].bv_len == 0 ) continue;
1519 mf.f_av_value = uuids[i];
1520 cb.sc_private = NULL;
1522 frs.sr_nentries = 0;
1523 rc = fop.o_bd->be_search( &fop, &frs );
1525 /* If entry was not found, add to delete list */
1526 if ( !cb.sc_private ) {
1527 uuids[ndel++] = uuids[i];
1530 fop.o_bd->bd_info = (BackendInfo *)on;
1533 struct berval cookie;
1535 slap_compose_sync_cookie( op, &cookie, delcsn, srs->sr_state.rid,
1536 srs->sr_state.sid );
1537 uuids[ndel].bv_val = NULL;
1538 syncprov_sendinfo( op, rs, LDAP_TAG_SYNC_ID_SET, &cookie, 0, uuids, 1 );
1539 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
1541 op->o_tmpfree( uuids, op->o_tmpmemctx );
1545 syncprov_op_response( Operation *op, SlapReply *rs )
1547 opcookie *opc = op->o_callback->sc_private;
1548 slap_overinst *on = opc->son;
1549 syncprov_info_t *si = on->on_bi.bi_private;
1552 if ( rs->sr_err == LDAP_SUCCESS )
1554 struct berval maxcsn = BER_BVNULL;
1555 char cbuf[LDAP_LUTIL_CSNSTR_BUFSIZE];
1558 /* Update our context CSN */
1560 ldap_pvt_thread_rdwr_wlock( &si->si_csn_rwlock );
1561 slap_get_commit_csn( op, &maxcsn );
1562 if ( !BER_BVISNULL( &maxcsn ) ) {
1564 strcpy( cbuf, maxcsn.bv_val );
1565 sid = slap_parse_csn_sid( &maxcsn );
1566 for ( i=0; i<si->si_numcsns; i++ ) {
1567 if ( sid == si->si_sids[i] ) {
1568 if ( ber_bvcmp( &maxcsn, &si->si_ctxcsn[i] ) > 0 ) {
1569 ber_bvreplace( &si->si_ctxcsn[i], &maxcsn );
1574 /* It's a new SID for us */
1575 if ( i == si->si_numcsns ) {
1576 value_add_one( &si->si_ctxcsn, &maxcsn );
1578 si->si_sids = ch_realloc( si->si_sids, si->si_numcsns *
1580 si->si_sids[i] = sid;
1584 /* Don't do any processing for consumer contextCSN updates */
1585 if ( SLAP_SYNC_SHADOW( op->o_bd ) &&
1586 op->o_msgid == SLAP_SYNC_UPDATE_MSGID ) {
1587 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1588 return SLAP_CB_CONTINUE;
1592 if ( si->si_chkops || si->si_chktime ) {
1593 if ( si->si_chkops && si->si_numops >= si->si_chkops ) {
1597 if ( si->si_chktime &&
1598 (op->o_time - si->si_chklast >= si->si_chktime )) {
1600 si->si_chklast = op->o_time;
1603 ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock );
1606 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1607 syncprov_checkpoint( op, rs, on );
1608 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1611 opc->sctxcsn.bv_len = maxcsn.bv_len;
1612 opc->sctxcsn.bv_val = cbuf;
1614 /* Handle any persistent searches */
1618 case LDAP_REQ_MODIFY:
1619 case LDAP_REQ_MODRDN:
1620 case LDAP_REQ_EXTENDED:
1621 syncprov_matchops( op, opc, 0 );
1623 case LDAP_REQ_DELETE:
1624 /* for each match in opc->smatches:
1627 for ( sm = opc->smatches; sm; sm=sm->sm_next ) {
1628 if ( sm->sm_op->s_op->o_abandon )
1630 syncprov_qresp( opc, sm->sm_op, LDAP_SYNC_DELETE );
1636 /* Add any log records */
1637 if ( si->si_logs && op->o_tag != LDAP_REQ_ADD ) {
1638 syncprov_add_slog( op );
1642 return SLAP_CB_CONTINUE;
1645 /* We don't use a subentry to store the context CSN any more.
1646 * We expose the current context CSN as an operational attribute
1647 * of the suffix entry.
1650 syncprov_op_compare( Operation *op, SlapReply *rs )
1652 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1653 syncprov_info_t *si = on->on_bi.bi_private;
1654 int rc = SLAP_CB_CONTINUE;
1656 if ( dn_match( &op->o_req_ndn, op->o_bd->be_nsuffix ) &&
1657 op->oq_compare.rs_ava->aa_desc == slap_schema.si_ad_contextCSN )
1662 e.e_name = op->o_bd->be_suffix[0];
1663 e.e_nname = op->o_bd->be_nsuffix[0];
1666 a.a_desc = slap_schema.si_ad_contextCSN;
1668 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
1670 a.a_vals = si->si_ctxcsn;
1671 a.a_nvals = a.a_vals;
1673 rs->sr_err = access_allowed( op, &e, op->oq_compare.rs_ava->aa_desc,
1674 &op->oq_compare.rs_ava->aa_value, ACL_COMPARE, NULL );
1675 if ( ! rs->sr_err ) {
1676 rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1677 goto return_results;
1680 if ( get_assert( op ) &&
1681 ( test_filter( op, &e, get_assertion( op ) ) != LDAP_COMPARE_TRUE ) )
1683 rs->sr_err = LDAP_ASSERTION_FAILED;
1684 goto return_results;
1688 rs->sr_err = LDAP_COMPARE_FALSE;
1690 if ( value_find_ex( op->oq_compare.rs_ava->aa_desc,
1691 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
1692 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
1693 a.a_nvals, &op->oq_compare.rs_ava->aa_value, op->o_tmpmemctx ) == 0 )
1695 rs->sr_err = LDAP_COMPARE_TRUE;
1700 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
1702 send_ldap_result( op, rs );
1704 if( rs->sr_err == LDAP_COMPARE_FALSE || rs->sr_err == LDAP_COMPARE_TRUE ) {
1705 rs->sr_err = LDAP_SUCCESS;
1714 syncprov_op_mod( Operation *op, SlapReply *rs )
1716 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
1717 syncprov_info_t *si = on->on_bi.bi_private;
1719 slap_callback *cb = op->o_tmpcalloc(1, sizeof(slap_callback)+
1721 (si->si_ops ? sizeof(modinst) : 0 ),
1723 opcookie *opc = (opcookie *)(cb+1);
1725 cb->sc_response = syncprov_op_response;
1726 cb->sc_cleanup = syncprov_op_cleanup;
1727 cb->sc_private = opc;
1728 cb->sc_next = op->o_callback;
1729 op->o_callback = cb;
1731 /* If there are active persistent searches, lock this operation.
1732 * See seqmod.c for the locking logic on its own.
1735 modtarget *mt, mtdummy;
1738 mi = (modinst *)(opc+1);
1741 /* See if we're already modifying this entry... */
1743 ldap_pvt_thread_mutex_lock( &si->si_mods_mutex );
1744 mt = avl_find( si->si_mods, &mtdummy, sp_avl_cmp );
1746 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1747 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1748 mt->mt_tail->mi_next = mi;
1750 /* wait for this op to get to head of list */
1751 while ( mt->mt_mods != mi ) {
1752 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1753 ldap_pvt_thread_yield();
1754 ldap_pvt_thread_mutex_lock( &mt->mt_mutex );
1756 /* clean up if the caller is giving up */
1757 if ( op->o_abandon ) {
1759 for ( m2 = mt->mt_mods; m2->mi_next != mi;
1761 m2->mi_next = mi->mi_next;
1762 if ( mt->mt_tail == mi ) mt->mt_tail = m2;
1763 op->o_tmpfree( cb, op->o_tmpmemctx );
1764 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1765 return SLAPD_ABANDON;
1768 ldap_pvt_thread_mutex_unlock( &mt->mt_mutex );
1770 /* Record that we're modifying this entry now */
1771 mt = ch_malloc( sizeof(modtarget) );
1774 mt->mt_op = mi->mi_op;
1775 ldap_pvt_thread_mutex_init( &mt->mt_mutex );
1776 avl_insert( &si->si_mods, mt, sp_avl_cmp, avl_dup_error );
1777 ldap_pvt_thread_mutex_unlock( &si->si_mods_mutex );
1781 if (( si->si_ops || si->si_logs ) && op->o_tag != LDAP_REQ_ADD )
1782 syncprov_matchops( op, opc, 1 );
1784 return SLAP_CB_CONTINUE;
1788 syncprov_op_extended( Operation *op, SlapReply *rs )
1790 if ( exop_is_write( op ))
1791 return syncprov_op_mod( op, rs );
1793 return SLAP_CB_CONTINUE;
1796 typedef struct searchstate {
1797 slap_overinst *ss_on;
1799 BerVarray ss_ctxcsn;
1806 syncprov_search_cleanup( Operation *op, SlapReply *rs )
1808 if ( rs->sr_ctrls ) {
1809 op->o_tmpfree( rs->sr_ctrls[0], op->o_tmpmemctx );
1810 op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
1811 rs->sr_ctrls = NULL;
1816 typedef struct SyncOperationBuffer {
1819 AttributeName sob_extra; /* not always present */
1820 /* Further data allocated here */
1821 } SyncOperationBuffer;
1824 syncprov_detach_op( Operation *op, syncops *so, slap_overinst *on )
1826 SyncOperationBuffer *sopbuf2;
1831 GroupAssertion *g1, *g2;
1833 /* count the search attrs */
1834 for (i=0; op->ors_attrs && !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
1835 alen += op->ors_attrs[i].an_name.bv_len + 1;
1837 /* Make a new copy of the operation */
1838 size = offsetof( SyncOperationBuffer, sob_extra ) +
1839 (i ? ( (i+1) * sizeof(AttributeName) + alen) : 0) +
1840 op->o_req_dn.bv_len + 1 +
1841 op->o_req_ndn.bv_len + 1 +
1842 op->o_ndn.bv_len + 1 +
1843 so->s_filterstr.bv_len + 1;
1844 sopbuf2 = ch_calloc( 1, size );
1845 op2 = &sopbuf2->sob_op;
1846 op2->o_hdr = &sopbuf2->sob_hdr;
1848 /* Copy the fields we care about explicitly, leave the rest alone */
1849 *op2->o_hdr = *op->o_hdr;
1850 op2->o_tag = op->o_tag;
1851 op2->o_time = op->o_time;
1852 op2->o_bd = on->on_info->oi_origdb;
1853 op2->o_request = op->o_request;
1854 op2->o_private = on;
1856 ptr = (char *) sopbuf2 + offsetof( SyncOperationBuffer, sob_extra );
1858 op2->ors_attrs = (AttributeName *) ptr;
1859 ptr = (char *) &op2->ors_attrs[i+1];
1860 for (i=0; !BER_BVISNULL( &op->ors_attrs[i].an_name ); i++) {
1861 op2->ors_attrs[i] = op->ors_attrs[i];
1862 op2->ors_attrs[i].an_name.bv_val = ptr;
1863 ptr = lutil_strcopy( ptr, op->ors_attrs[i].an_name.bv_val ) + 1;
1865 BER_BVZERO( &op2->ors_attrs[i].an_name );
1868 op2->o_authz = op->o_authz;
1869 op2->o_ndn.bv_val = ptr;
1870 ptr = lutil_strcopy(ptr, op->o_ndn.bv_val) + 1;
1871 op2->o_dn = op2->o_ndn;
1872 op2->o_req_dn.bv_len = op->o_req_dn.bv_len;
1873 op2->o_req_dn.bv_val = ptr;
1874 ptr = lutil_strcopy(ptr, op->o_req_dn.bv_val) + 1;
1875 op2->o_req_ndn.bv_len = op->o_req_ndn.bv_len;
1876 op2->o_req_ndn.bv_val = ptr;
1877 ptr = lutil_strcopy(ptr, op->o_req_ndn.bv_val) + 1;
1878 op2->ors_filterstr.bv_val = ptr;
1879 strcpy( ptr, so->s_filterstr.bv_val );
1880 op2->ors_filterstr.bv_len = so->s_filterstr.bv_len;
1882 /* Skip the AND/GE clause that we stuck on in front */
1883 if ( so->s_flags & PS_FIX_FILTER ) {
1884 op2->ors_filter = op->ors_filter->f_and->f_next;
1885 so->s_flags ^= PS_FIX_FILTER;
1887 op2->ors_filter = op->ors_filter;
1889 op2->ors_filter = filter_dup( op2->ors_filter, NULL );
1892 /* Copy any cached group ACLs individually */
1893 op2->o_groups = NULL;
1894 for ( g1=op->o_groups; g1; g1=g1->ga_next ) {
1895 g2 = ch_malloc( sizeof(GroupAssertion) + g1->ga_len );
1897 strcpy( g2->ga_ndn, g1->ga_ndn );
1898 g2->ga_next = op2->o_groups;
1901 /* Don't allow any further group caching */
1902 op2->o_do_not_cache = 1;
1904 /* Add op2 to conn so abandon will find us */
1905 ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
1906 op->o_conn->c_n_ops_executing++;
1907 op->o_conn->c_n_ops_completed--;
1908 LDAP_STAILQ_INSERT_TAIL( &op->o_conn->c_ops, op2, o_next );
1909 so->s_flags |= PS_IS_DETACHED;
1910 ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
1912 /* Prevent anyone else from trying to send a result for this op */
1917 syncprov_search_response( Operation *op, SlapReply *rs )
1919 searchstate *ss = op->o_callback->sc_private;
1920 slap_overinst *on = ss->ss_on;
1921 sync_control *srs = op->o_controls[slap_cids.sc_LDAPsync];
1923 if ( rs->sr_type == REP_SEARCH || rs->sr_type == REP_SEARCHREF ) {
1925 /* If we got a referral without a referral object, there's
1926 * something missing that we cannot replicate. Just ignore it.
1927 * The consumer will abort because we didn't send the expected
1930 if ( !rs->sr_entry ) {
1931 assert( rs->sr_entry != NULL );
1932 Debug( LDAP_DEBUG_ANY, "bogus referral in context\n",0,0,0 );
1933 return SLAP_CB_CONTINUE;
1935 a = attr_find( rs->sr_entry->e_attrs, slap_schema.si_ad_entryCSN );
1936 if ( a == NULL && rs->sr_operational_attrs != NULL ) {
1937 a = attr_find( rs->sr_operational_attrs, slap_schema.si_ad_entryCSN );
1941 sid = slap_parse_csn_sid( &a->a_nvals[0] );
1943 /* Don't send changed entries back to the originator */
1944 if ( sid == srs->sr_state.sid && srs->sr_state.numcsns ) {
1945 Debug( LDAP_DEBUG_SYNC,
1946 "Entry %s changed by peer, ignored\n",
1947 rs->sr_entry->e_name.bv_val, 0, 0 );
1948 return LDAP_SUCCESS;
1950 /* Make sure entry is less than the snapshot'd contextCSN */
1951 for ( i=0; i<ss->ss_numcsns; i++ ) {
1952 if ( sid == ss->ss_sids[i] && ber_bvcmp( &a->a_nvals[0],
1953 &ss->ss_ctxcsn[i] ) > 0 ) {
1954 Debug( LDAP_DEBUG_SYNC,
1955 "Entry %s CSN %s greater than snapshot %s\n",
1956 rs->sr_entry->e_name.bv_val,
1957 a->a_nvals[0].bv_val,
1958 ss->ss_ctxcsn[i].bv_val );
1959 return LDAP_SUCCESS;
1963 /* Don't send old entries twice */
1964 if ( srs->sr_state.ctxcsn ) {
1965 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
1966 if ( sid == srs->sr_state.sids[i] &&
1967 ber_bvcmp( &a->a_nvals[0],
1968 &srs->sr_state.ctxcsn[i] )<= 0 ) {
1969 Debug( LDAP_DEBUG_SYNC,
1970 "Entry %s CSN %s older or equal to ctx %s\n",
1971 rs->sr_entry->e_name.bv_val,
1972 a->a_nvals[0].bv_val,
1973 srs->sr_state.ctxcsn[i].bv_val );
1974 return LDAP_SUCCESS;
1979 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
1981 rs->sr_ctrls[1] = NULL;
1982 rs->sr_err = syncprov_state_ctrl( op, rs, rs->sr_entry,
1983 LDAP_SYNC_ADD, rs->sr_ctrls, 0, 0, NULL );
1984 } else if ( rs->sr_type == REP_RESULT && rs->sr_err == LDAP_SUCCESS ) {
1985 struct berval cookie;
1987 slap_compose_sync_cookie( op, &cookie, ss->ss_ctxcsn,
1988 srs->sr_state.rid, srs->sr_state.sid );
1990 /* Is this a regular refresh? */
1992 rs->sr_ctrls = op->o_tmpalloc( sizeof(LDAPControl *)*2,
1994 rs->sr_ctrls[1] = NULL;
1995 rs->sr_err = syncprov_done_ctrl( op, rs, rs->sr_ctrls,
1996 0, 1, &cookie, ss->ss_present ? LDAP_SYNC_REFRESH_PRESENTS :
1997 LDAP_SYNC_REFRESH_DELETES );
1998 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2000 /* It's RefreshAndPersist, transition to Persist phase */
2001 syncprov_sendinfo( op, rs, ss->ss_present ?
2002 LDAP_TAG_SYNC_REFRESH_PRESENT : LDAP_TAG_SYNC_REFRESH_DELETE,
2003 &cookie, 1, NULL, 0 );
2004 op->o_tmpfree( cookie.bv_val, op->o_tmpmemctx );
2006 /* Detach this Op from frontend control */
2007 ldap_pvt_thread_mutex_lock( &ss->ss_so->s_mutex );
2009 /* Turn off the refreshing flag */
2010 ss->ss_so->s_flags ^= PS_IS_REFRESHING;
2012 syncprov_detach_op( op, ss->ss_so, on );
2014 /* If there are queued responses, fire them off */
2015 if ( ss->ss_so->s_res )
2016 syncprov_qstart( ss->ss_so );
2017 ldap_pvt_thread_mutex_unlock( &ss->ss_so->s_mutex );
2019 return LDAP_SUCCESS;
2023 return SLAP_CB_CONTINUE;
2027 syncprov_op_search( Operation *op, SlapReply *rs )
2029 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2030 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2032 int gotstate = 0, nochange = 0, do_present;
2033 syncops *sop = NULL;
2037 int i, *sids, numcsns;
2038 struct berval mincsn;
2040 if ( !(op->o_sync_mode & SLAP_SYNC_REFRESH) ) return SLAP_CB_CONTINUE;
2042 if ( op->ors_deref & LDAP_DEREF_SEARCHING ) {
2043 send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "illegal value for derefAliases" );
2047 do_present = si->si_nopres ? 0 : 1;
2049 srs = op->o_controls[slap_cids.sc_LDAPsync];
2050 op->o_managedsait = SLAP_CONTROL_NONCRITICAL;
2052 /* If this is a persistent search, set it up right away */
2053 if ( op->o_sync_mode & SLAP_SYNC_PERSIST ) {
2063 so.s_flags = PS_IS_REFRESHING | PS_FIND_BASE;
2064 /* syncprov_findbase expects to be called as a callback... */
2065 sc.sc_private = &opc;
2067 ldap_pvt_thread_mutex_init( &so.s_mutex );
2068 cb = op->o_callback;
2069 op->o_callback = ≻
2070 rs->sr_err = syncprov_findbase( op, &fc );
2071 op->o_callback = cb;
2072 ldap_pvt_thread_mutex_destroy( &so.s_mutex );
2074 if ( rs->sr_err != LDAP_SUCCESS ) {
2075 send_ldap_result( op, rs );
2078 sop = ch_malloc( sizeof( syncops ));
2080 ldap_pvt_thread_mutex_init( &sop->s_mutex );
2081 sop->s_rid = srs->sr_state.rid;
2082 sop->s_sid = srs->sr_state.sid;
2085 ldap_pvt_thread_mutex_lock( &si->si_ops_mutex );
2086 sop->s_next = si->si_ops;
2088 ldap_pvt_thread_mutex_unlock( &si->si_ops_mutex );
2091 /* snapshot the ctxcsn */
2092 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2093 numcsns = si->si_numcsns;
2095 ber_bvarray_dup_x( &ctxcsn, si->si_ctxcsn, op->o_tmpmemctx );
2096 sids = op->o_tmpalloc( numcsns * sizeof(int), op->o_tmpmemctx );
2097 for ( i=0; i<numcsns; i++ )
2098 sids[i] = si->si_sids[i];
2103 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2105 /* If we have a cookie, handle the PRESENT lookups */
2106 if ( srs->sr_state.ctxcsn ) {
2110 /* If we don't have any CSN of our own yet, pretend nothing
2116 /* If there are SIDs we don't recognize in the cookie, drop them */
2117 for (i=0; i<srs->sr_state.numcsns; ) {
2118 for (j=0; j<numcsns; j++) {
2119 if ( srs->sr_state.sids[i] == sids[j] ) {
2124 if ( j == numcsns ) {
2125 struct berval tmp = srs->sr_state.ctxcsn[i];
2126 j = srs->sr_state.numcsns - 1;
2127 srs->sr_state.ctxcsn[i] = srs->sr_state.ctxcsn[j];
2129 srs->sr_state.ctxcsn[j] = tmp;
2130 srs->sr_state.numcsns = j;
2131 srs->sr_state.sids[i] = srs->sr_state.sids[j];
2137 /* Find the smallest CSN */
2138 mincsn = srs->sr_state.ctxcsn[0];
2139 for ( i=1; i<srs->sr_state.numcsns; i++ ) {
2140 if ( ber_bvcmp( &mincsn, &srs->sr_state.ctxcsn[i] ) > 0 )
2141 mincsn = srs->sr_state.ctxcsn[i];
2144 /* If nothing has changed, shortcut it */
2145 if ( srs->sr_state.numcsns == numcsns ) {
2146 int i, j, changed = 0;
2147 for ( i=0; i<srs->sr_state.numcsns; i++ ) {
2148 for ( j=0; j<numcsns; j++ ) {
2149 if ( srs->sr_state.sids[i] != sids[j] )
2151 if ( !bvmatch( &srs->sr_state.ctxcsn[i], &ctxcsn[j] ))
2159 no_change: nochange = 1;
2160 if ( !(op->o_sync_mode & SLAP_SYNC_PERSIST) ) {
2161 LDAPControl *ctrls[2];
2165 syncprov_done_ctrl( op, rs, ctrls, 0, 0,
2166 NULL, LDAP_SYNC_REFRESH_DELETES );
2167 rs->sr_ctrls = ctrls;
2168 rs->sr_err = LDAP_SUCCESS;
2169 send_ldap_result( op, rs );
2170 rs->sr_ctrls = NULL;
2176 /* Do we have a sessionlog for this search? */
2179 ldap_pvt_thread_mutex_lock( &sl->sl_mutex );
2180 /* Are there any log entries, and is the consumer state
2181 * present in the session log?
2183 if ( sl->sl_num > 0 && ber_bvcmp( &mincsn, &sl->sl_mincsn ) >= 0 ) {
2185 /* mutex is unlocked in playlog */
2186 syncprov_playlog( op, rs, sl, srs, ctxcsn, numcsns, sids );
2188 ldap_pvt_thread_mutex_unlock( &sl->sl_mutex );
2191 /* Is the CSN still present in the database? */
2192 if ( syncprov_findcsn( op, FIND_CSN ) != LDAP_SUCCESS ) {
2193 /* No, so a reload is required */
2194 /* the 2.2 consumer doesn't send this hint */
2195 if ( si->si_usehint && srs->sr_rhint == 0 ) {
2197 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2198 send_ldap_error( op, rs, LDAP_SYNC_REFRESH_REQUIRED, "sync cookie is stale" );
2203 /* If changed and doing Present lookup, send Present UUIDs */
2204 if ( do_present && syncprov_findcsn( op, FIND_PRESENT ) !=
2207 ber_bvarray_free_x( ctxcsn, op->o_tmpmemctx );
2208 send_ldap_result( op, rs );
2215 /* Append CSN range to search filter, save original filter
2216 * for persistent search evaluation
2219 sop->s_filterstr= op->ors_filterstr;
2222 /* If something changed, find the changes */
2223 if ( gotstate && !nochange ) {
2224 Filter *fand, *fava;
2226 fand = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2227 fand->f_choice = LDAP_FILTER_AND;
2228 fand->f_next = NULL;
2229 fava = op->o_tmpalloc( sizeof(Filter), op->o_tmpmemctx );
2231 fava->f_choice = LDAP_FILTER_GE;
2232 fava->f_ava = op->o_tmpalloc( sizeof(AttributeAssertion), op->o_tmpmemctx );
2233 fava->f_ava->aa_desc = slap_schema.si_ad_entryCSN;
2234 #ifdef LDAP_COMP_MATCH
2235 fava->f_ava->aa_cf = NULL;
2237 ber_dupbv_x( &fava->f_ava->aa_value, &mincsn, op->o_tmpmemctx );
2238 fava->f_next = op->ors_filter;
2239 op->ors_filter = fand;
2240 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
2242 sop->s_flags |= PS_FIX_FILTER;
2245 /* Let our callback add needed info to returned entries */
2246 cb = op->o_tmpcalloc(1, sizeof(slap_callback)+sizeof(searchstate), op->o_tmpmemctx);
2247 ss = (searchstate *)(cb+1);
2250 ss->ss_present = do_present;
2251 ss->ss_ctxcsn = ctxcsn;
2252 ss->ss_numcsns = numcsns;
2254 cb->sc_response = syncprov_search_response;
2255 cb->sc_cleanup = syncprov_search_cleanup;
2256 cb->sc_private = ss;
2257 cb->sc_next = op->o_callback;
2258 op->o_callback = cb;
2260 /* If this is a persistent search and no changes were reported during
2261 * the refresh phase, just invoke the response callback to transition
2262 * us into persist phase
2265 rs->sr_err = LDAP_SUCCESS;
2266 rs->sr_nentries = 0;
2267 send_ldap_result( op, rs );
2270 return SLAP_CB_CONTINUE;
2274 syncprov_operational(
2278 slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
2279 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2281 if ( rs->sr_entry &&
2282 dn_match( &rs->sr_entry->e_nname, op->o_bd->be_nsuffix )) {
2284 if ( SLAP_OPATTRS( rs->sr_attr_flags ) ||
2285 ad_inlist( slap_schema.si_ad_contextCSN, rs->sr_attrs )) {
2286 Attribute *a, **ap = NULL;
2288 for ( a=rs->sr_entry->e_attrs; a; a=a->a_next ) {
2289 if ( a->a_desc == slap_schema.si_ad_contextCSN )
2293 ldap_pvt_thread_rdwr_rlock( &si->si_csn_rwlock );
2294 if ( si->si_ctxcsn ) {
2296 for ( ap = &rs->sr_operational_attrs; *ap;
2297 ap=&(*ap)->a_next );
2299 a = attr_alloc( slap_schema.si_ad_contextCSN );
2304 if ( !rs->sr_flags & REP_ENTRY_MODIFIABLE ) {
2305 rs->sr_entry = entry_dup( rs->sr_entry );
2307 REP_ENTRY_MODIFIABLE|REP_ENTRY_MUSTBEFREED;
2308 a = attr_find( rs->sr_entry->e_attrs,
2309 slap_schema.si_ad_contextCSN );
2313 ber_bvarray_dup_x( &a->a_vals, si->si_ctxcsn, NULL );
2314 a->a_nvals = a->a_vals;
2316 ldap_pvt_thread_rdwr_runlock( &si->si_csn_rwlock );
2319 return SLAP_CB_CONTINUE;
2329 static ConfigDriver sp_cf_gen;
2331 static ConfigTable spcfg[] = {
2332 { "syncprov-checkpoint", "ops> <minutes", 3, 3, 0, ARG_MAGIC|SP_CHKPT,
2333 sp_cf_gen, "( OLcfgOvAt:1.1 NAME 'olcSpCheckpoint' "
2334 "DESC 'ContextCSN checkpoint interval in ops and minutes' "
2335 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
2336 { "syncprov-sessionlog", "ops", 2, 2, 0, ARG_INT|ARG_MAGIC|SP_SESSL,
2337 sp_cf_gen, "( OLcfgOvAt:1.2 NAME 'olcSpSessionlog' "
2338 "DESC 'Session log size in ops' "
2339 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
2340 { "syncprov-nopresent", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_NOPRES,
2341 sp_cf_gen, "( OLcfgOvAt:1.3 NAME 'olcSpNoPresent' "
2342 "DESC 'Omit Present phase processing' "
2343 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2344 { "syncprov-reloadhint", NULL, 2, 2, 0, ARG_ON_OFF|ARG_MAGIC|SP_USEHINT,
2345 sp_cf_gen, "( OLcfgOvAt:1.4 NAME 'olcSpReloadHint' "
2346 "DESC 'Observe Reload Hint in Request control' "
2347 "SYNTAX OMsBoolean SINGLE-VALUE )", NULL, NULL },
2348 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
2351 static ConfigOCs spocs[] = {
2352 { "( OLcfgOvOc:1.1 "
2353 "NAME 'olcSyncProvConfig' "
2354 "DESC 'SyncRepl Provider configuration' "
2355 "SUP olcOverlayConfig "
2356 "MAY ( olcSpCheckpoint $ olcSpSessionlog $ olcSpNoPresent ) )",
2357 Cft_Overlay, spcfg },
2362 sp_cf_gen(ConfigArgs *c)
2364 slap_overinst *on = (slap_overinst *)c->bi;
2365 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2368 if ( c->op == SLAP_CONFIG_EMIT ) {
2369 switch ( c->type ) {
2371 if ( si->si_chkops || si->si_chktime ) {
2373 bv.bv_len = sprintf( c->msg, "%d %d",
2374 si->si_chkops, si->si_chktime );
2376 value_add_one( &c->rvalue_vals, &bv );
2382 if ( si->si_logs ) {
2383 c->value_int = si->si_logs->sl_size;
2389 if ( si->si_nopres ) {
2396 if ( si->si_usehint ) {
2404 } else if ( c->op == LDAP_MOD_DELETE ) {
2405 switch ( c->type ) {
2412 si->si_logs->sl_size = 0;
2414 rc = LDAP_NO_SUCH_ATTRIBUTE;
2417 if ( si->si_nopres )
2420 rc = LDAP_NO_SUCH_ATTRIBUTE;
2423 if ( si->si_usehint )
2426 rc = LDAP_NO_SUCH_ATTRIBUTE;
2431 switch ( c->type ) {
2433 if ( lutil_atoi( &si->si_chkops, c->argv[1] ) != 0 ) {
2434 snprintf( c->msg, sizeof( c->msg ), "%s unable to parse checkpoint ops # \"%s\"",
2435 c->argv[0], c->argv[1] );
2436 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2437 "%s: %s\n", c->log, c->msg, 0 );
2438 return ARG_BAD_CONF;
2440 if ( si->si_chkops <= 0 ) {
2441 snprintf( c->msg, sizeof( c->msg ), "%s invalid checkpoint ops # \"%d\"",
2442 c->argv[0], si->si_chkops );
2443 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2444 "%s: %s\n", c->log, c->msg, 0 );
2445 return ARG_BAD_CONF;
2447 if ( lutil_atoi( &si->si_chktime, c->argv[2] ) != 0 ) {
2448 snprintf( c->msg, sizeof( c->msg ), "%s unable to parse checkpoint time \"%s\"",
2449 c->argv[0], c->argv[1] );
2450 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2451 "%s: %s\n", c->log, c->msg, 0 );
2452 return ARG_BAD_CONF;
2454 if ( si->si_chktime <= 0 ) {
2455 snprintf( c->msg, sizeof( c->msg ), "%s invalid checkpoint time \"%d\"",
2456 c->argv[0], si->si_chkops );
2457 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2458 "%s: %s\n", c->log, c->msg, 0 );
2459 return ARG_BAD_CONF;
2461 si->si_chktime *= 60;
2465 int size = c->value_int;
2468 snprintf( c->msg, sizeof( c->msg ), "%s size %d is negative",
2470 Debug( LDAP_DEBUG_CONFIG|LDAP_DEBUG_NONE,
2471 "%s: %s\n", c->log, c->msg, 0 );
2472 return ARG_BAD_CONF;
2476 sl = ch_malloc( sizeof( sessionlog ) + LDAP_LUTIL_CSNSTR_BUFSIZE );
2477 sl->sl_mincsn.bv_val = (char *)(sl+1);
2478 sl->sl_mincsn.bv_len = 0;
2480 sl->sl_head = sl->sl_tail = NULL;
2481 ldap_pvt_thread_mutex_init( &sl->sl_mutex );
2488 si->si_nopres = c->value_int;
2491 si->si_usehint = c->value_int;
2497 /* ITS#3456 we cannot run this search on the main thread, must use a
2498 * child thread in order to insure we have a big enough stack.
2505 syncprov_findcsn( ptr, FIND_MAXCSN );
2509 /* Read any existing contextCSN from the underlying db.
2510 * Then search for any entries newer than that. If no value exists,
2511 * just generate it. Cache whatever result.
2519 slap_overinst *on = (slap_overinst *) be->bd_info;
2520 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2522 Connection conn = { 0 };
2523 OperationBuffer opbuf;
2528 void *thrctx = NULL;
2530 if ( !SLAP_LASTMOD( be )) {
2531 Debug( LDAP_DEBUG_ANY,
2532 "syncprov_db_open: invalid config, lastmod must be enabled\n", 0, 0, 0 );
2536 if ( slapMode & SLAP_TOOL_MODE ) {
2540 rc = overlay_register_control( be, LDAP_CONTROL_SYNC );
2545 thrctx = ldap_pvt_thread_pool_context();
2546 connection_fake_init( &conn, &opbuf, thrctx );
2549 op->o_dn = be->be_rootdn;
2550 op->o_ndn = be->be_rootndn;
2552 rc = overlay_entry_get_ov( op, be->be_nsuffix, NULL,
2553 slap_schema.si_ad_contextCSN, 0, &e, on );
2556 ldap_pvt_thread_t tid;
2558 a = attr_find( e->e_attrs, slap_schema.si_ad_contextCSN );
2561 ber_bvarray_dup_x( &si->si_ctxcsn, a->a_vals, NULL );
2562 for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ );
2564 si->si_sids = slap_parse_csn_sids( si->si_ctxcsn, i, NULL );
2566 overlay_entry_release_ov( op, e, 0, on );
2567 if ( si->si_ctxcsn ) {
2568 op->o_req_dn = be->be_suffix[0];
2569 op->o_req_ndn = be->be_nsuffix[0];
2570 op->ors_scope = LDAP_SCOPE_SUBTREE;
2571 ldap_pvt_thread_create( &tid, 0, syncprov_db_otask, op );
2572 ldap_pvt_thread_join( tid, NULL );
2576 /* Didn't find a contextCSN, should we generate one? */
2577 if ( !si->si_ctxcsn ) {
2578 char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
2581 if ( SLAP_SYNC_SHADOW( op->o_bd )) {
2582 /* If we're also a consumer, then don't generate anything.
2583 * Wait for our provider to send it to us, or for a local
2584 * modify if we have multimaster.
2588 csn.bv_val = csnbuf;
2589 csn.bv_len = sizeof( csnbuf );
2590 slap_get_csn( op, &csn, 0 );
2591 value_add_one( &si->si_ctxcsn, &csn );
2593 si->si_sids = ch_malloc( sizeof(int) );
2594 si->si_sids[0] = slap_serverID;
2596 /* make sure we do a checkpoint on close */
2601 op->o_bd->bd_info = (BackendInfo *)on;
2605 /* Write the current contextCSN into the underlying db.
2613 slap_overinst *on = (slap_overinst *) be->bd_info;
2614 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2616 if ( slapMode & SLAP_TOOL_MODE ) {
2619 if ( si->si_numops ) {
2620 Connection conn = {0};
2621 OperationBuffer opbuf;
2623 SlapReply rs = {REP_RESULT};
2626 thrctx = ldap_pvt_thread_pool_context();
2627 connection_fake_init( &conn, &opbuf, thrctx );
2630 op->o_dn = be->be_rootdn;
2631 op->o_ndn = be->be_rootndn;
2632 syncprov_checkpoint( op, &rs, on );
2644 slap_overinst *on = (slap_overinst *)be->bd_info;
2645 syncprov_info_t *si;
2647 if ( SLAP_ISGLOBALOVERLAY( be ) ) {
2648 Debug( LDAP_DEBUG_ANY,
2649 "syncprov must be instantiated within a database.\n",
2654 si = ch_calloc(1, sizeof(syncprov_info_t));
2655 on->on_bi.bi_private = si;
2656 ldap_pvt_thread_rdwr_init( &si->si_csn_rwlock );
2657 ldap_pvt_thread_mutex_init( &si->si_ops_mutex );
2658 ldap_pvt_thread_mutex_init( &si->si_mods_mutex );
2660 csn_anlist[0].an_desc = slap_schema.si_ad_entryCSN;
2661 csn_anlist[0].an_name = slap_schema.si_ad_entryCSN->ad_cname;
2662 csn_anlist[1].an_desc = slap_schema.si_ad_entryUUID;
2663 csn_anlist[1].an_name = slap_schema.si_ad_entryUUID->ad_cname;
2665 uuid_anlist[0].an_desc = slap_schema.si_ad_entryUUID;
2666 uuid_anlist[0].an_name = slap_schema.si_ad_entryUUID->ad_cname;
2672 syncprov_db_destroy(
2677 slap_overinst *on = (slap_overinst *)be->bd_info;
2678 syncprov_info_t *si = (syncprov_info_t *)on->on_bi.bi_private;
2681 if ( si->si_logs ) {
2682 slog_entry *se = si->si_logs->sl_head;
2685 slog_entry *se_next = se->se_next;
2690 ch_free( si->si_logs );
2692 if ( si->si_ctxcsn )
2693 ber_bvarray_free( si->si_ctxcsn );
2695 ch_free( si->si_sids );
2696 ldap_pvt_thread_mutex_destroy( &si->si_mods_mutex );
2697 ldap_pvt_thread_mutex_destroy( &si->si_ops_mutex );
2698 ldap_pvt_thread_rdwr_destroy( &si->si_csn_rwlock );
2705 static int syncprov_parseCtrl (
2711 BerElementBuffer berbuf;
2712 BerElement *ber = (BerElement *)&berbuf;
2715 struct berval cookie = BER_BVNULL;
2719 if ( op->o_sync != SLAP_CONTROL_NONE ) {
2720 rs->sr_text = "Sync control specified multiple times";
2721 return LDAP_PROTOCOL_ERROR;
2724 if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
2725 rs->sr_text = "Sync control specified with pagedResults control";
2726 return LDAP_PROTOCOL_ERROR;
2729 if ( BER_BVISNULL( &ctrl->ldctl_value ) ) {
2730 rs->sr_text = "Sync control value is absent";
2731 return LDAP_PROTOCOL_ERROR;
2734 if ( BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
2735 rs->sr_text = "Sync control value is empty";
2736 return LDAP_PROTOCOL_ERROR;
2739 /* Parse the control value
2740 * syncRequestValue ::= SEQUENCE {
2745 * refreshAndPersist (3)
2747 * cookie syncCookie OPTIONAL
2751 ber_init2( ber, &ctrl->ldctl_value, 0 );
2753 if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
2754 rs->sr_text = "Sync control : mode decoding error";
2755 return LDAP_PROTOCOL_ERROR;
2759 case LDAP_SYNC_REFRESH_ONLY:
2760 mode = SLAP_SYNC_REFRESH;
2762 case LDAP_SYNC_REFRESH_AND_PERSIST:
2763 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
2766 rs->sr_text = "Sync control : unknown update mode";
2767 return LDAP_PROTOCOL_ERROR;
2770 tag = ber_peek_tag( ber, &len );
2772 if ( tag == LDAP_TAG_SYNC_COOKIE ) {
2773 if (( ber_scanf( ber, /*{*/ "m", &cookie )) == LBER_ERROR ) {
2774 rs->sr_text = "Sync control : cookie decoding error";
2775 return LDAP_PROTOCOL_ERROR;
2777 tag = ber_peek_tag( ber, &len );
2779 if ( tag == LDAP_TAG_RELOAD_HINT ) {
2780 if (( ber_scanf( ber, /*{*/ "b", &rhint )) == LBER_ERROR ) {
2781 rs->sr_text = "Sync control : rhint decoding error";
2782 return LDAP_PROTOCOL_ERROR;
2785 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
2786 rs->sr_text = "Sync control : decoding error";
2787 return LDAP_PROTOCOL_ERROR;
2789 sr = op->o_tmpcalloc( 1, sizeof(struct sync_control), op->o_tmpmemctx );
2790 sr->sr_rhint = rhint;
2791 if (!BER_BVISNULL(&cookie)) {
2792 ber_dupbv_x( &sr->sr_state.octet_str, &cookie, op->o_tmpmemctx );
2793 if ( slap_parse_sync_cookie( &sr->sr_state, op->o_tmpmemctx ) ||
2794 sr->sr_state.rid == -1 ) {
2795 rs->sr_text = "Sync control : cookie parsing error";
2796 return LDAP_PROTOCOL_ERROR;
2800 op->o_controls[slap_cids.sc_LDAPsync] = sr;
2802 op->o_sync = ctrl->ldctl_iscritical
2803 ? SLAP_CONTROL_CRITICAL
2804 : SLAP_CONTROL_NONCRITICAL;
2806 op->o_sync_mode |= mode; /* o_sync_mode shares o_sync */
2808 return LDAP_SUCCESS;
2811 /* This overlay is set up for dynamic loading via moduleload. For static
2812 * configuration, you'll need to arrange for the slap_overinst to be
2813 * initialized and registered by some other function inside slapd.
2816 static slap_overinst syncprov;
2819 syncprov_initialize()
2823 rc = register_supported_control( LDAP_CONTROL_SYNC,
2824 SLAP_CTRL_SEARCH, NULL,
2825 syncprov_parseCtrl, &slap_cids.sc_LDAPsync );
2826 if ( rc != LDAP_SUCCESS ) {
2827 Debug( LDAP_DEBUG_ANY,
2828 "syncprov_init: Failed to register control %d\n", rc, 0, 0 );
2832 syncprov.on_bi.bi_type = "syncprov";
2833 syncprov.on_bi.bi_db_init = syncprov_db_init;
2834 syncprov.on_bi.bi_db_destroy = syncprov_db_destroy;
2835 syncprov.on_bi.bi_db_open = syncprov_db_open;
2836 syncprov.on_bi.bi_db_close = syncprov_db_close;
2838 syncprov.on_bi.bi_op_abandon = syncprov_op_abandon;
2839 syncprov.on_bi.bi_op_cancel = syncprov_op_abandon;
2841 syncprov.on_bi.bi_op_add = syncprov_op_mod;
2842 syncprov.on_bi.bi_op_compare = syncprov_op_compare;
2843 syncprov.on_bi.bi_op_delete = syncprov_op_mod;
2844 syncprov.on_bi.bi_op_modify = syncprov_op_mod;
2845 syncprov.on_bi.bi_op_modrdn = syncprov_op_mod;
2846 syncprov.on_bi.bi_op_search = syncprov_op_search;
2847 syncprov.on_bi.bi_extended = syncprov_op_extended;
2848 syncprov.on_bi.bi_operational = syncprov_operational;
2850 syncprov.on_bi.bi_cf_ocs = spocs;
2852 generic_filter.f_desc = slap_schema.si_ad_objectClass;
2854 rc = config_register_schema( spcfg, spocs );
2855 if ( rc ) return rc;
2857 return overlay_register( &syncprov );
2860 #if SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC
2862 init_module( int argc, char *argv[] )
2864 return syncprov_initialize();
2866 #endif /* SLAPD_OVER_SYNCPROV == SLAPD_MOD_DYNAMIC */
2868 #endif /* defined(SLAPD_OVER_SYNCPROV) */